Schedules of Investments (Unaudited) - Investments (Details)	Jun. 30, 2020 USD ($) oz	Mar. 31, 2020 USD ($) oz	Dec. 31, 2019 USD ($) oz	Jun. 30, 2019 USD ($) oz	Mar. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz
Gold bullion (Ounce) | oz	14,658,518	12,571,766	11,577,252	9,474,090	9,695,079	9,009,541
Investment in gold bullion, cost	$ 20,470,354,346	$ 16,858,848,412	$ 15,094,673,874	$ 11,930,367,963	$ 12,152,880,181	$ 11,255,129,376
Gold bullion fair value	25,917,726,586		17,632,155,037
Less Liabilities	(5,101,796)		(3,629,955)
Net Assets	$ 25,912,624,790	$ 20,223,180,272	$ 17,628,525,082	$ 13,346,432,796	$ 12,556,331,670	$ 11,544,738,146